Put-Call Ratio (Volume) (30-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

SELLAS Life Sciences Group, Inc. (SLS) had 30-Day Put-Call Ratio (Volume) of 0.2241 for 2026-04-20.

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Figures for 2026-04-20

Volatility Metrics
Historical Volatility (Close-to-Close)	1.0803
Historical Volatility (Parkinson)	0.7576
Implied Volatility (Calls)	1.2725
Implied Volatility (Puts)	1.3805
Implied Volatility (Mean)	1.3265
Put-Call Implied Volatility Ratio	1.0849
Implied Volatility Skew	0.0980
Option Statistics
Put-Call Ratio (Volume)	0.2241
Put-Call Ratio (Open Interest)	0.0848